The subject matter disclosed herein relates to a method of manufacturing a transverse flux stator core.
In a transverse flux machine, a central rotor (or “coreback”) is equipped with a series of permanent magnets that are arranged circumferentially in an alternating north-south configuration. The central rotor and the permanent magnets are surrounded by a circumferential coil that extends through a series of circumferentially arranged stator cores 10. During operation, the rotor may be rotated about its longitudinal axis whereby the permanent magnets induce a magnetic flux in the stator cores 10, which in turn generates a current in the coil. Conversely, if current is applied to the coil, the current induces a flux in the stator cores 10 that causes the permanent magnets and the rotor to rotate.
According to one aspect of the invention, a transverse flux stator core is provided and includes laminations. Each of the laminations has a desired profile and is non-planar. The laminations are bonded in a stacked, aligned arrangement.
According to another aspect of the invention, a method of manufacturing a transverse flux stator core is provided and includes shaping laminations to a desired profile, non-planarizing the shaped laminations and bonding the non-planarized shaped laminations in a stacked, aligned arrangement.
According to yet another aspect of the invention, a method of manufacturing a transverse flux stator core is provided and includes shaping laminations to a desired profile, bonding the shaped laminations in a stacked, aligned arrangement and non-planarizing the stacked, aligned arrangement of bonded shaped laminations.
These and other advantages and features will become more apparent from the following description taken in conjunction with the drawings.
The subject matter, which is regarded as the invention, is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
The detailed description explains embodiments of the invention, together with advantages and features, by way of example with reference to the drawings.
With reference to
Each of the stator cores 10 may be formed of a similar process and the following description will therefore relate to the formation of a single one (i.e., “the stator core 10”) of the stator cores 10. Such formation leads to the stator core 10 including laminations 11. Each of the laminations 11 may have a desired profile 12, such as a U-shape as shown in
In accordance with embodiments, the laminations 11 may be initially shaped to the desired profile 12 (e.g., the U-shape or the C-shape) by at least one or more of machining and punching. A result of the shaping is shown in
With reference to
With reference to
In accordance with alternative embodiments, the shaping of the laminations 11 to the desired profile 12 and the bonding of the shaped laminations 11 in the stacked, aligned arrangement 13 may be completed prior to the non-planarization. In these alternative embodiments, the non-planarization is completed for all of the laminations 11 in the stator core 10 as a group once the bonding is completed.
While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Additionally, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description, but is only limited by the scope of the appended claims.